406 citations · 937 across the 17 of their papers we have counts for
17 papers
High spatial resolution spectral imaging method for space interferometers and its application to formation-flying small satellites
Taro Matsuo, Satoshi Ikari, Hirotaka Kondo +3
Infrared space interferometers can surpass the spatial resolution limitations of single-dish space telescopes. However, stellar interferometers from space have not been realized be…
Densified pupil spectrograph as high-precision radial velocimetry: From direct measurement of the Universe's expansion history to characterization of nearby habitable planet candidates
Taro Matsuo, Thomas P. Greene, Mahdi Qezlou +4
The direct measurement of the Universe's expansion history and the search for terrestrial planets in habitable zones around solar-type stars require extremely high-precision radial…
MuSCAT2: four-color Simultaneous Camera for the 1.52-m Telescopio Carlos Sánchez
Norio Narita, Akihiko Fukui, Nobuhiko Kusakabe +19
We report the development of a 4-color simultaneous camera for the 1.52~m Telescopio Carlos Sánchez (TCS) in the Teide Observatory, Canaries, Spain. The new instrument, named MuSCA…
Laboratory demonstration of a cryogenic deformable mirror for wavefront correction of space-borne infrared telescopes
Aoi Takahashi, Keigo Enya, Kanae Haze +9
This paper demonstrates a cryogenic deformable mirror (DM) with 1,020 actuators based on micro-electrical mechanical systems (MEMS) technology. Cryogenic space-borne infrared teles…
Experimental demonstration of binary shaped pupil mask coronagraphs for telescopes with obscured pupils
Kanae Haze, Keigo Enya, Lyu Abe +3
We present the fabrication and experimental demonstration of three free-standing binary shaped pupil mask coronagraphs, which are applicable for telescopes with partially obscured…
A New Concept for Spectro-photometry of Exoplanets with Space-based Telescopes
Taro Matsuo, Satoshi Itoh, Hiroshi Shibai +2
We propose a new concept for spectral characterization of transiting exoplanets with future space-based telescopes. This concept, called as densified pupil spectroscopy, allows us…
MuSCAT: a multicolor simultaneous camera for studying atmospheres of transiting exoplanets
Norio Narita, Akihiko Fukui, Nobuhiko Kusakabe +6
We report a development of a multi-color simultaneous camera for the 188cm telescope at Okayama Astrophysical Observatory in Japan. The instrument, named MuSCAT, has a capability o…
Coronagraphic demonstration experiment using aluminum mirrors for space infrared astronomical observations
Shinji Oseki, Shinki Oyabu, Daisuke Ishihara +7
For future space infrared astronomical coronagraphy, we perform experimental studies on the application of aluminum mirrors to a coronagraph. Cooled reflective optics is required f…
Five New Exoplanets Orbiting Three Metal-Rich, Massive Stars: Two-Planet Systems Including Long-Period Planets, and an Eccentric Planet
Hiroki Harakawa, Bun'ei Sato, Masashi Omiya +13
We report detections of new exoplanets from a radial velocity (RV) survey of metal-rich FGK stars by using three telescopes. By optimizing our RV analysis method to long time-basel…
ANIR : Atacama Near-Infrared Camera for the 1.0-m miniTAO Telescope
Masahiro Konishi, Kentaro Motohara, Ken Tateuchi +35
We have developed a near-infrared camera called ANIR (Atacama Near-InfraRed camera) for the University of Tokyo Atacama Observatory 1.0m telescope (miniTAO) installed at the summit…
Detection of solar-like oscillations in the bright red giant stars Psc and Tau from a 190-day high-precision spectroscopic multisite campaign
P. G. Beck, E. Kambe, M. Hillen +35
Red giants are evolved stars which exhibit solar-like oscillations. Although a multitude of stars have been observed with space telescopes, only a handful of red-giant stars were t…
The image slicer for the Subaru Telescope High Dispersion Spectrograph
Akito Tajitsu, Wako Aoki, Tomoyasu Yamamuro
We report on the design, manufacturing, and performance of the image slicer for the High Dispersion Spectrograph (HDS) on the Subaru Telescope. This instrument is a Bowen-Walraven…
A high dynamic-range instrument for SPICA for coronagraphic observation of exoplanets and monitoring of transiting exoplanets
K. Enya, L. Abe, S. Takeuchi +2
This paper, first, presents introductory reviews of the Space Infrared Telescope for Cosmology and Astrophysics (SPICA) mission and the SPICA Coronagraph Instrument (SCI). SPICA wi…
The SPICA coronagraphic instrument (SCI) for the study of exoplanets
K. Enya, T. Kotani, K. Haze +39
We present the SPICA Coronagraphic Instrument (SCI), which has been designed for a concentrated study of extra-solar planets (exoplanets). SPICA mission provides us with a unique o…
Multi-Color Coronagraph Experiment in a Vacuum Testbed with a Binary Shaped Pupil Mask
Kanae Haze, Keigo Enya, Lyu Abe +4
We conducted a number of multi-band coronagraph experiments using a vacuum chamber and a binary-shaped pupil mask which in principle should work at all wavelengths, in the context…
Near-infrared and Mid-infrared Spectroscopy with the Infrared Camera (IRC) for AKARI
Youichi Ohyama, Takashi Onaka, Hideo Matsuhara +22
The Infrared Camera (IRC) is one of the two instruments on board the AKARI satellite. In addition to deep imaging from 1.8-26.5um for the pointed observation mode of the AKARI, it…
The Infrared Camera (IRC) for AKARI - Design and Imaging Performance
T. Onaka, H. Matsuhara, T. Wada +25
The Infrared Camera (IRC) is one of two focal-plane instruments on the AKARI satellite. It is designed for wide-field deep imaging and low-resolution spectroscopy in the near- to m…